Friction-clutch.



No. 65|,842. Patented lune I9, |900.

J. T.A FORD.

FHlC-TIUN CLUTCH. N o M n d e I.) (Application led Aug. 18, 1,899.)- 3sssssss sheet l.

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J. T. Folin.l

FRICTION CLUTCH.

(Application N o M edel.)

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led Aug. 18, 1899.)

APatented .lune I9, |900.

Sheets-Sheet 2'.

No. 65I,842 Patented lune I9, |900.

J. T. FORD.

F'HQTIJN4 CLUTCH'. (Applctiop filed Aug'. 18, 1899 wAsmNm-ON. n. c.

used for this purpose, is a friction grip-wheel VUNITED STATES' JAMESTHOMAS FORD, OF GALVESTON, TEXAS.

FRlcTloN- CLUTCH.

SPECIFICATION forming part of Letters Patent No. 651,842, dated J une19, 1900.

Applicationrled August 18, 189,9.

To aZZw/om it may con/cern; Y

Be it known that I, JAMES THOMAS FORD, a citizen of the United States,residing in Galveston, in the county of Galveston, State of4 Texas, haveinvented certain n ew and useful Improvements in Friction-Clutches; andI do hereby declare the following to be a full, clear,

and exact description of the invention, such wheel F, is the skeletonwheel G, appropriately secured to said shaft in any convenient .manner,as by the set screw g', passing `through the hub qtl and bearingforcibly as will enable others skilled in the art to which it appertainsto makeand use the same.

My invention relates Atoclutches, and more particularly to that typewhereinthemem.- bers composing the clutch are ,adapted to transmitmotion from one to the other by frictional engagement thereof. Inclutches of this general character it is desirable that the means forcontrolling the frictional engagement of the members shall be ofsimplified construction, powerfulin operation, and readily controllableto tighten or releasethe engagement of the clutch members withoutstopping the machine.

With these objects in view my invention consists of the parts andcombinations, as will hereinafter clearly appear and be deinitelypointed out in the claims.

Having reference to the drawings, Figure 1 shows my improved clutch inside elevation. Fig. 2 is a longitudinal section thereof, and Fig. 3 isa section on line 3 3, Fig. 1.

Supported in any usual manner and connected to any desired driving anddriven parts of a machine, respectively, are the alined shafts A B,having their ends A' B' in close proximity. These shafts, as shown inthe drawings, are supported on uprights C D, provided with any usualform of journal-bearings C D. It is to be noted, however, that suchuprights and bearings are shown in this connection simply as anillustration of any known supporting means for the two shafts A B andsuch supporting means need not be located in relation to the parts asshown, it being necessary only that the two shafts extending from thedriving anddriven parts of a machine shall be suitably held inalinement.

Mounted 4on, and secured to the shaft A, which may for the purposes ofthis description be designated the power-transmitting shaft, althougheither shaft A or B can be F, carried by the hub F', fixed to said shaftSerial No. 7271694. (No model.)

jA by means of the binding-screw f. Extending radially from the hub F'and preferably formed integral therewith are the arms f', carrying attheir outer ends the flanged rim F2, having the inturned friction-rimF3, which by its opposite faces forms the friction-surface ofthegrip-wheel F.

Near the end of shaft B, adjacent the gripagainst the shaft. Theskeleton wheel G is preferablyformed of less diameter than the`grip-wheel and its radiating arms g3 carry `near their outer end thering g2, which is lpreferably formed to loosely fit within thefriction-rim F3, as clearly indicated in Figs.

'2 and 3. The radiating arms gS of the skeleton wheel G are preferablyformed with slots gif, extending from the hub g to the ends of the arms,and in the recess thus formed there is pivoted to each arm on pins g5 apair of friction-shoe-supporting arms h h', each carrying at itsouter'end a friction-shoe h2.

These friction-shoes bear upon the opposite faces of the friction-rimF3, as will be clear from Fig. 2, and their frictional contact therewithis controlled by the following mechanism:

Loosely mounted on the shaft .B is the externally-threaded sleeve S,operative by the `hand-wheel S', and mounted to turn on said sleeve isthe hand-wheel S2, having an extended hub provided with an internalscrew-thread corresponding to and in engagement with the externalthreads of sleeve S. The hub s is also provided with an annular grooveor recess s', in which freely rides a collar s2, having lugs s3projecting radially therefrom at intervals around its periphery. Pivotedto' said lugs S8 by pins s4 are the connecting-arms 85, extending towardand riding in grooves s on the hub g of the skeleton wheel G. To theends of the arms S5 are pivotally connected the levers P, correspondingvin number to the said arms and extending radially with and opposite theslots g4 in the radial arms g3 of the skeleton wheel G. The levers P attheir extreme outer ends are pivotally connected at o to the links p,which extend through slots o4 in the rim g2 of the skeletonwheel and areIOO i IO

to disengage the lock from the sleeve during rotation of the shaft, andconnections between the hub and shoes.

4. In a friction-clutch, the combination of the clutch members, theshaft, an exteriorlythreaded sleeve loosely mounted on the shaft butheld from 4endwise movement thereon, a collar xed to the shaft, ahand-wheel loosely mounted on the collar, means operative by said handwheel to lock and unlock the threaded sleeve to the shaft, a threadedhub mounted on said sleeve, and means operative by endwise movement ofthe hub to engage and disengage the clutch members.

' 5. In afriction-clutch, the combination of a shaft, a friction grip-wheel mounted thereon, a skeleton wheel provided with a grooved huband carrying pivoted frictiomshoesupporting arms, a connecting-armmovable longitu# dinally of the shaft in the grooves of said hub, alever pivoted tothe end of the connectingarm, and links joining thefriction-shoe-sup porting arms with said lever at dierent distances fromits end.

6. In a friction-clutch, the combination of a shaft, a frictiongrip-wheel mounted thereon, a skeleton wheel provided with a grooved huband carrying pivoted frictionshoe-support ing arms, a threaded sleevemounted on said shaft, an interiorly-threaded hub mounted on saidsleeve, connecting-arms secured to said hub and movable in the groovedhub, levers connected to said connecting-arms, and links joining thefriction-shoe-supporting arms to said levers at different distances fromthe ends of the latter.

In testimony whereof I aiix my signature in presence of two witnesses.

Y JAMES THOMAS FORD; Y Witnesses:

JESSE ALBERT' BELCHER', HARRY SMITH.

